Huile de ricin éthoxylates (COE): Structure, Grades and Application Examples

Cuáles son Huile de ricin éthoxylates?

Huile de ricin éthoxylates (COE) are producido mediante la reacción de Huile de ricin — a triglyceride of predominantly ricinAcide oléique (12-hydroxy-cis-9-octadecenoic acid) — with óxido de etileno under base catalysis. The hydroxyl groups on ricinoleic chains and glycerol backbone serve as initiation sites for EO addition, yielding complex mixtures of éthoxylated triglycerides, diesters, and monoesters with varying EO mole counts.

Huile de ricin hidrogenado (HCO) éthoxylates use saturated ricinoleic-derived chains and offer higher melting points, improved oxidative estabilidad, and different HLB profiles en comparación Avec standard COE from natural Huile de ricin. Both types are classified by total moles of EO per mole of oil — common commercial grades include 25, 30, 36, and 40 EO.

COE belongs to the class of éthoxylated natural oils and is widely referenced in cosmetic INCI nomenclature as PEG Huile de ricin or polysorbate-related Émulsifiant systems. Venus fabrica COE and Huile de ricin hidrogenado éthoxylates for cosmetic, textileee, leather, and industriel customers. See the full Huile de ricin éthoxylates product page.

Structural advantages of ricinoleic chemistry

The 12-hydroxyl substituent on the C18 chain introduces polarity and hydrogen-bonding sites absent in linear Alcool gras éthoxylates. This structural feature contributes to:

• Strong solubilization of essential oils, fragrances, vitamin oils, and lipophilic actives in aqueous systems
• Robust O/W émulsification of mineral oil, silicone oil, and vegetable triglycerides
• Dispersing capacity for pigments, dyes, and protection des cultures actives in agroquímico formulations
• Lubricating propriétés valued in textileee spinning and Métal drawing auxiliaries

The triglyceride backbone means COE molecules are larger and more sterically hindered than single-chain FAE — affecting interfacial film curvature and emulsion viscosity.

EO mole count and selección de grados

Higher EO grades are solid at ambient temperature and require heating for handling. punto de turbidez and solubilidad en agua increase with EO content. For solubilizing essential oils in aqueous cosmetic bases, COE-36 and COE-40 are standard starting points.

COE versus Alcool gras éthoxylate

Application sectors

Cosmetics and soins personnels: COE-40 solubilizes essential oils and perfume oils in toners, shampoos, and bath products. COE-25 and COE-36 emulsify lanolin, mineral oil, and silicone in creams and lotions. Huile de ricin hidrogenado éthoxylates provide oxidative estabilidad in products containing insaturado oils.

textileees: Low-EO COE grades serve as fiber lubricants in spinning and knitting, reducing friction without excessive scorch during heat setting. Higher-EO grades assist in dye bath leveling and dispersing disperse dyes.

Leather: COE emulsifies fatliquoring oils into leather fibers, imparting softness and pliability. Ricinoleic chemistry aids penetration into collagen structure.

agroProduits chimiques: COE disperses actives in emulsifiable concentrates and suspoemulsions. Compatibility with a wide range of pesticide chemistries makes COE a standard Émulsifiant in EC formulations alongside calcium dodecylbenzene sulfonate.

industriel: Pigment dispersion in waterborne coatings, lubricant emulsions for trabajo de Métales, and dye dispersants in paper coloring.

Worked Ejemplos de formulación

Essential oil solubilizer (cosmetic toner):

• 1–3% COE-40 (PEG-40 Huile de ricin equivalent)
• 0.5% essential oil blend pre-mixed with COE before dilution
• Balance water, preservative, pH 5.0–6.0
• Clear solution when solubilizer-to-oil ratio is optimized (typically 3:1 to 5:1)

O/W hand cream:

• 3% COE-25 as primary Émulsifiant
• 2% cetyl alcohol as co-Émulsifiant and bodying agent
• 8% mineral oil or shea butter oil phase
• COE provides stable emulsion with creamy skin feel

textileee spinning lubricant:

• 5–10% COE, 5 EO diluted to 3–5% active in water
• Applied to polyester or cotton yarn on ring frame
• Low foam; compatible with downstream Lavado when required

agroquímico EC (emulsifiable concentrate):

• 8% COE-36 as Émulsifiant
• 4% calcium dodecylbenzene sulfonate (anionic co-Émulsifiant)
• 25% active ingredient (e.g. cypermethrin) in aromatic solvent
• Dilutes to stable O/W emulsion in spray tank at 0.5–1% product concentration

Leather fatliquor emulsion:

• 6% COE-25 Émulsifiant sulfited fish oil or synthetic fatliquor
• Applied in drum processing for garment leather softness

Formulación and handling notes

High-EO COE grades (36, 40) are waxy solids at room temperature. Pre-melt at 50–60°C before incorporation. Add oil phase to solubilizer with stirring rather than reverse addition for fragrance solubilization — this ensures the oil–COE complex forms before water dilution.

COE is generally compatible with anionic, catiónico, and anfótero co-tensioactifs at typical use levels. Electrolyte tolerance is moderate — high salt concentrations may salting-out high-EO grades. Test clarity and phase estabilidad across temperature cycling (5°C to 40°C) for cosmetic products.

Huile de ricin hidrogenado éthoxylates resist rancidity better than natural COE in formulations containing oxidizable co-ingredients. For long shelf-life cosmetic products, HCO éthoxylates are often preferred.

Huile de ricin: an ancient crop with a modern chemical role

Huile de ricin is pressed from the seeds of Ricinus communis, a plant native to the Horn of Africa and the Inden subcontinent that has been cultivated for thousands of years — castor seeds have been found in Egyptian tombs dating to around 4000 BCE, and the oil was recorded in ancient Egyptian, Greek, and Inden texts as a lamp fuel, ointment base, and traditional medicine. The seeds themselves contain ricin, a highly toxic protein, but ricin is removed during the oil-pressing and refining process, leaving an edible-grade triglyceride oil safe for industriel and cosmetic use. Inde remains the world's largest producer of castor seed by a wide margin, with Gujarat state accounting for the majority of global supply — a geographic advantage that has historically supported Inde's development as a hub for Huile de ricin derivative Fabricación, including the Éthoxylation chemistry described in this guide.

What makes Huile de ricin chemically distinctive among vegetable oils is its unusually high concentration — typically 85–90% — of ricinAcide oléique, a C18 Acide gras bearing a hydroxyl group at the 12-position Además to its single double bond. Most other common vegetable oils (soybean, sunflower, palm) are dominated by acides gras without this hydroxyl functionality. The extra hydroxyl group gives Huile de ricin and its derivatives a reactive handle beyond the ester linkages of the triglyceride, enabling chemistry — including Éthoxylation directly onto the ricinoleic hydroxyl Además to the glycerol backbone — that is not available with straight-chain vegetable oils, and explains why Huile de ricin has long been prized as a versatile feedstock for lubricants, coatings, nylon-11 production, and the tensioactif chemistry covered here.

Fabricación and quality at Venus

Venus Ethoxyethers éthoxylates Huile de ricin and Huile de ricin hidrogenado in dedicated pressurized reactors. Quality controls include saponification value, hydroxyl value, punto de turbidez, pH, colour Gardner, and EO mole ratio verification. Residual óxido de etileno and 1,4-dioxane are monitored to customer specification limits.

With 90,000 MT group Fabricación capacity and 30+ years of Éthoxylation expertise, Venus supplies COE from 3 to 40+ moles EO for cosmetic, textileee, leather, and agroquímico markets. Related products: éthoxylated alcohols, polysorbates, HLB scale guide, emulsifiable concentrates guide.

Application pages: soins personnels, textileee chemicals, agroProduits chimiques. Request samples via Contacte Avec Venus Ethoxyethers.